1 Some kind of light is emitted for each element when it is moved from higher energy level to lower energy level
2 Also some of energy is absorbed which is being used to move electrons from high energy level to lower energy level
Oxygen is the 2nd most electronegative element. When you examine a periodic table, you will find that (excluding the noble gases) the electronegativity values tend to increase as you go to the right and up. The reverse statement is that the values tend to decrease going down and to the left.
Answer:
1. DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
2. both
Explanation: Since errors can occur when DNA replicates itself, mutations can occur in both asexually and sexually reproducing organisms.
Answer:
is there a picture or something?
Explanation:
